51445010004 has 24 divisors (see below), whose sum is σ = 120087965760. Its totient is φ = 17141249664.

The previous prime is 51445009999. The next prime is 51445010039. The reversal of 51445010004 is 40001054415.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 855589 + ... + 913740.

It is an arithmetic number, because the mean of its divisors is an integer number (5003665240).

Almost surely, 2^51445010004 is an apocalyptic number.

It is an amenable number.

51445010004 is an abundant number, since it is smaller than the sum of its proper divisors (68642955756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51445010004 is a wasteful number, since it uses less digits than its factorization.

51445010004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771759 (or 1771757 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 51445010004 its reverse (40001054415), we get a palindrome (91446064419).

The spelling of 51445010004 in words is "fifty-one billion, four hundred forty-five million, ten thousand, four".